#include<bits/stdc++.h>
using namespace std;
#define lalala ios_base::sync_with_stdio(false);cin.tie(NULL);
//#define endl "\n"
#define ll long long
#define N 200005
#define pb push_back
int main(){
lalala;
int n,q;cin>>n>>q;
stack<int> s;
char str[n+1];
s.push(1);
str[1]='(';
for(int i=2;i<=n;i++){
if(s.size()){
int a=s.top();
cout<<"? "<<a<<" "<<i<<endl;
int x;cin>>x;
if(x==1){
str[i]=')';
s.pop();
}
else{
str[i]='(';
s.push(i);
}
}
else{
s.push(i);
str[i]='(';
continue;
}
}
cout<<"! ";
for(int i=1;i<=n;i++)cout<<str[i];
cout<<endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
4 ms |
208 KB |
Output is correct |
3 |
Correct |
6 ms |
208 KB |
Output is correct |
4 |
Correct |
7 ms |
208 KB |
Output is correct |
5 |
Correct |
5 ms |
220 KB |
Output is correct |
6 |
Correct |
7 ms |
208 KB |
Output is correct |
7 |
Correct |
6 ms |
208 KB |
Output is correct |
8 |
Correct |
8 ms |
208 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
208 KB |
Mismatch at position 1. Expected ), found ( |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
374 ms |
392 KB |
Output is correct |
3 |
Correct |
585 ms |
396 KB |
Output is correct |
4 |
Correct |
674 ms |
388 KB |
Output is correct |
5 |
Correct |
552 ms |
384 KB |
Output is correct |
6 |
Correct |
452 ms |
396 KB |
Output is correct |
7 |
Correct |
732 ms |
700 KB |
Output is correct |
8 |
Correct |
787 ms |
392 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
208 KB |
Mismatch at position 1. Expected ), found ( |
2 |
Halted |
0 ms |
0 KB |
- |